WO2021185929A3 - High level syntax for video coding and decoding - Google Patents

High level syntax for video coding and decoding Download PDF

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Publication number
WO2021185929A3
WO2021185929A3 PCT/EP2021/056870 EP2021056870W WO2021185929A3 WO 2021185929 A3 WO2021185929 A3 WO 2021185929A3 EP 2021056870 W EP2021056870 W EP 2021056870W WO 2021185929 A3 WO2021185929 A3 WO 2021185929A3
Authority
WO
WIPO (PCT)
Prior art keywords
decoding
syntax elements
slice
bitstream
high level
Prior art date
Application number
PCT/EP2021/056870
Other languages
French (fr)
Other versions
WO2021185929A2 (en
Inventor
Guillaume Laroche
Nael Ouedraogo
Patrice Onno
Original Assignee
Canon Kabushiki Kaisha
Canon Europe Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Kabushiki Kaisha, Canon Europe Limited filed Critical Canon Kabushiki Kaisha
Priority to JP2022542500A priority Critical patent/JP7434580B2/en
Priority to US17/913,114 priority patent/US20230115242A1/en
Priority to BR112022018757A priority patent/BR112022018757A2/en
Priority to CN202180022971.4A priority patent/CN115315949A/en
Priority to EP21711909.8A priority patent/EP4122201A2/en
Priority to KR1020227035376A priority patent/KR20220153071A/en
Publication of WO2021185929A2 publication Critical patent/WO2021185929A2/en
Publication of WO2021185929A3 publication Critical patent/WO2021185929A3/en
Priority to JP2024015773A priority patent/JP2024050804A/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/156—Availability of hardware or computational resources, e.g. encoding based on power-saving criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/174—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a slice, e.g. a line of blocks or a group of blocks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/186—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

There is provided a method of decoding video data from a bitstream, the bitstream comprising video data corresponding to one or more slices. The bitstream comprises a picture header comprising syntax elements to be used when decoding one or more slices, and a slice header comprising syntax elements to be used when decoding a slice, the decoding comprising: parsing the syntax elements. The method includes omitting parsing one or more syntax elements for a slice relating to use or availability of a decoding tool or parameter for that slice if one or more syntax elements are parsed that indicate that the picture contains only one slice; and decoding said bitstream using said syntax elements.
PCT/EP2021/056870 2020-03-20 2021-03-17 High level syntax for video coding and decoding WO2021185929A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2022542500A JP7434580B2 (en) 2020-03-20 2021-03-17 High-level syntax for video encoding and decoding
US17/913,114 US20230115242A1 (en) 2020-03-20 2021-03-17 High level syntax for video coding and decoding
BR112022018757A BR112022018757A2 (en) 2020-03-20 2021-03-17 HIGH-LEVEL SYNTAX FOR VIDEO ENCODING AND DECODING
CN202180022971.4A CN115315949A (en) 2020-03-20 2021-03-17 High level syntax for video encoding and decoding
EP21711909.8A EP4122201A2 (en) 2020-03-20 2021-03-17 High level syntax for video coding and decoding
KR1020227035376A KR20220153071A (en) 2020-03-20 2021-03-17 High-level syntax for video coding and decoding
JP2024015773A JP2024050804A (en) 2020-03-20 2024-02-05 High level syntax for video coding and decoding

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2004095.2 2020-03-20
GB2004095.2A GB2593222B (en) 2020-03-20 2020-03-20 High level syntax for video coding and decoding

Publications (2)

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WO2021185929A2 WO2021185929A2 (en) 2021-09-23
WO2021185929A3 true WO2021185929A3 (en) 2022-01-27

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PCT/EP2021/056870 WO2021185929A2 (en) 2020-03-20 2021-03-17 High level syntax for video coding and decoding

Country Status (9)

Country Link
US (1) US20230115242A1 (en)
EP (1) EP4122201A2 (en)
JP (2) JP7434580B2 (en)
KR (1) KR20220153071A (en)
CN (1) CN115315949A (en)
BR (1) BR112022018757A2 (en)
GB (1) GB2593222B (en)
TW (1) TWI827919B (en)
WO (1) WO2021185929A2 (en)

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EP4131967A4 (en) * 2020-03-31 2024-05-22 Sharp Kabushiki Kaisha Dynamic image decoding device, dynamic image coding device, dynamic image decoding method, and dynamic image coding method
KR20240074008A (en) * 2020-03-31 2024-05-27 베이징 다지아 인터넷 인포메이션 테크놀로지 컴퍼니 리미티드 Methods and apparatuses for signaling of syntax elements in video coding
US11659207B2 (en) * 2020-06-08 2023-05-23 Qualcomm Incorporated General constraints of syntax elements for video coding
CN118743220A (en) * 2021-12-07 2024-10-01 抖音视界有限公司 Method, apparatus and medium for video processing

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Also Published As

Publication number Publication date
TW202137765A (en) 2021-10-01
CN115315949A (en) 2022-11-08
GB202004095D0 (en) 2020-05-06
GB2593222B (en) 2024-07-17
EP4122201A2 (en) 2023-01-25
JP2023516251A (en) 2023-04-19
GB2593222A (en) 2021-09-22
TWI827919B (en) 2024-01-01
BR112022018757A2 (en) 2022-11-01
WO2021185929A2 (en) 2021-09-23
KR20220153071A (en) 2022-11-17
JP2024050804A (en) 2024-04-10
JP7434580B2 (en) 2024-02-20
US20230115242A1 (en) 2023-04-13

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